Sash-balancing device



(No Model.) 2 Sheets-*Sheet 1. P.. MARSHALL.

A sAsH BALANGING DEVICE.

No. 561,014. V172113911111211 May 26, 1896.

(No Modem 2 Sheets-Sheet 2.

P'. MARSHALL. SASH BALANING DEVICE.

No. 561,014. 5 y Patented May 26, 1896.

` [Vf/''. l

UNITED STATES PATENT OFFICE..

PORTER MARSHALL, OF FAIR PLAY, MISSOURI.

SASH-BALANCING DEVICE.

SPECIFICATION forming part Of Irl-Eiersv Patent N0. 561,014, dated May2.6, 1896.

y l Application filed January 17, 1896. Serial No. 575,880. (No model.)l

To all whom it may con/cern.'

Be it known that I, PORTER MARSHALL, of Fair Play, in the county of Polkand State of Missouri, have invented a new and useful Improvement inDevices for Operating Vindow- Sashes, of which the following is a full,clear, and exact description.

My invention relates to devices for operating window-sashes, especiallysashes of large size.

The object of the invention is to provide a means whereby the upper sashof awindowframe may be raised and 'lowered by correspondingly operatingthe lower sash, and whereby, also, when desirable, the lower sash may beoperatedindependently of the upperl sash.

A further object of the inventionis to construct a device capable of theabove-mentioned results, readily adaptable to any Window, and which willbe durable, simple, and economic in its construction.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fullyset forth, and pointed out inthe claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure l is a front elevation of a windowframe and window-sashescontained therein, the latter having the improvement applied thereto.Fig. 2 is a vertical central section through the window-frame andwindowsashes, the said section being taken substantially on the line 2 2of Fig. l. Fig. 3 is a horizontal section taken through the frame andthro ugh the upper sash of the same. Fig. et is a vertical sectionthrough the lower sash and through the window-frame, the section beingtaken at right angles to that shown in Fig. 2; and Fig. 5 is a detailsectional view taken substantially on the line 5 5 of Fig. l.

ln carrying out the invention the Window- 'frame A may be of any desiredshape or of any size, and is provided with the usual upper and lowersashes B and B', held to travel in the usual sash-grooves. The twosashes are separated by the ordinary parting-strip b, and an outer orback stop b is employed,

together with an inside or front stop b2, the latter having a verticalgroove b3 in its inner face, asis best shown in Fig. 3. The two sashes Band B are made to balance one another, and the uppersash has attachedthereto at each side one end of a tape 13. These tapes are carriedupward over friction-rollers or pulleys 14, located at the upper portionof the window-frame upon its inner side faces, and the said tapes, afterhaving been passed over the said pulleys, are each attached to alocking-strip C.

The locking-strips C are preferably made of metal, although any desiredmaterial may be used, and the said strips are angular in cross-section,comprising what may be termed a side member l0, adapted for looseengagement With the inner side face of the window-frame, and a` frontmember ll, adapted for loose engagement with the inside or front stopb2. Each of the locking-strips C is provided with openings l2 in thefront member '11, as shown best in Fig. l, and these openings are atpredetermined distances apart, while openings l2a are likewise made inthe inner or side members l() of the aforesaid locking-strips. Theopenings in both me1nbers of the strips are preferably locatedsubstantially opposite each other. l

A casing D is countersunk in the inner face of each side of theWindoW-frameat about a point where the two sashes would meet whenclosed. A gravity-latch l5 is pivoted in each of the said casings D, andthe heads of the said latches are adapted to extend outside throughsuitable openings in the front portion of the aforesaid casings, asshown in Fig. fl. The heads of the latches are provided with a beveledor decidedly-inclined upper surface d, and the lower edge CZ of the headof each latch is also decidedly inclined, as shown in Fig. Ll, theinclination of the bottom l portions of the heads being substantially ata right angle to the upper inclined surface d.

A casing E isintroduced into each side edge of the lower sash B, and ineach of these casings E a gravity-latch 1G is located, and the heads ofthese latches, as illustrated in Fig. 5, are adapted to extend outthrough suitable openings in the casing, the said openings being inadein the front faces of the cas- IOO ings, and these faces aresubstantially flush with the front or inner faces of the lower sash, asshown in Fig. l.

A slot or a groove 17 is made in each side edge of the lower sash B',extending from the top of the casings E to the uppei` edge of the sash,as shown in Figs. 3 and Ll. The latches l5, located in the frame-casingD, are adapted to enter the openings l2 in the side members l() of thelocking-strips, while the latches that are carried by the lower sash areadapted to enter the openings l2 in the front members ll of theaforesaid locking-strips, as shown in Figs. l, 4, and 5.

In the operation of the device, both of the window-sashes being closedand it being desired to lower the upper sash, the lower sash is raised,whereupon the upper sash will drop a corresponding distance, and whenthe upper sash has been dropped a sufficient distance to enable theupper latches l5 in the window-frame to enter one of the openings l2CLin the locking-strips, as shown in Fig. 4, the latches will hold thelocking-strips in their upper position, the said strips having beencarried upward with the lower sash by reason of the heads of the latchesof said sash extending through the lower openings l2 in the frontmembers of the said locking -strips Aft-er the locking engagementbetween the frame-latches and the locking-strips has been accomplishedthe lower sash is carried upward until the heads of the latches carriedby the said lower sash will engage with the surfaces of thelocking-strips between a lower opening l2 and the next openin g above.This contact between the latches of the lower sash and thelocking-strips will carry the said latches within their casings, so thatby a quick downward movement the latches of the lower sash maybe jumpedover the lower openings in the locking-strips and the sash may then belowered to an engagement with the sill of the window-frame, if desired,leaving the upper sash in its open position. \Vhen it is desired toclose the upper sash, the lower sash is raised until its latches areagain in engagement with the locking or governing strips C, whereuponthe lower sash is closed, carrying the upper sash at the same time toits upper closed position, as shown in Fig. l.

By reason of the decidedly-inclined upper surfaces d of theframe-latches and the lower inclined surfaces d' and also by reason ofthe corresponding surfaces e and e', formed on the heads of thesash-latches, the latches will readily pass the governing or lockingstrips when the said strips are qnicklymanipulatcd g but when the stripsare slowly manipulated the heads of the latches will naturally gravitateinto the openings of the locking or governing strips that may bepresented to them. I desire it to be understood that if the two sashesare not to operate in unison an apertured strip may be provided foreither the upper or the lower sash, or for both, the said strip orstrips being secured to the inner face of the window-frame to receivethe latches carried by the sashes.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. The combination, with the upper and lower sashes ofa window-frame, and strips angular in cross-section and having slidingmovement in the frame, of a connection between the said strips and theupper sash, and gravi ty-latehes carried by the lower sash, an d adaptedfor locking engagement with the aforesaid apertured strips, as and forthe purpose speeiied.

2. The combination, with the upper and lower sashes of a window-frame,and slides, angular in cross-section, having free movement in the saidframe and connected with the upper sash, of gravity locking devices located in the frame, adapted for locking engagement with one member ofeach of the said strips, and similar locking devices carried by thelower sash and adapted for engagement with the second members of theaforesaid strips, as and for the purpose speeliied.

rlhe combination of a window-frame, sashes arranged to move therein, alockingstrip connected to and arranged to move with one sash and havingmeans to detachably connect it to the other sash, and a gravitylatchmounted on the frame in position to engage and hold said locking-stripagainst movement, substantially as set forth.

4. The combination of a window-frame, sashes arranged to move therein, alockingstrip, a flexible connection between the locking-strip and onesash, a gravity-latch mounted in the frame and arranged to engage saidstrip and hold the same against movement, and a gravity-latch carried bythe other sash and detaehably connected with the lockingstrip,substantially as set forth.

PORTER MARSHALL.

Witnesses:

JAMEs CUNNINGHAM, JACOB E. RICHARDS.

ICO

